CVE-2025-27800

CVSS v3 4.8 MEDIUM

4.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.7 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

T

he Episerver Content Management System (CMS) by Optimizely was affected by multiple Stored Cross-Site Scripting (XSS) vulnerabilities. This allowed an authenticated attacker to execute malicious JavaScript code in the victim's browser. The Admin dashboard offered the functionality to add gadgets to the dashboard. This included the "Notes" gadget. An authenticated attacker with the corresponding access rights (such as "WebAdmin") that was impersonating the victim could insert malicious JavaScript code in these notes that would be executed if the victim visited the dashboard. Affected products: Version 11.X: EPiServer.CMS.Core (<11.21.4) with EPiServer.CMS.UI (<11.37.5), Version 12.X: EPiServer.CMS.Core (<12.22.1) with EPiServer.CMS.UI (<11.37.3)

References

Link	Resource
https://api.nuget.optimizely.com/packages/episerver.cms.core/11.21.4#
https://api.nuget.optimizely.com/packages/episerver.cms.core/12.22.1#
https://r.sec-consult.com/optimizely
http://seclists.org/fulldisclosure/2025/Aug/18

Configurations

No configuration.

History

03 Nov 2025, 20:18

Type	Values Removed	Values Added
References		() http://seclists.org/fulldisclosure/2025/Aug/18 -

29 Jul 2025, 14:14

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-07-28 09:15

Updated : 2025-11-03 20:18

NVD link : CVE-2025-27800

Mitre link : CVE-2025-27800

CVE.ORG link : CVE-2025-27800

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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